over 1 year ago
Remote, United StatesSenior
Base Salary
$140k - $210k/yr
Responsibilities
- Conceive, design, build, and launch new user-facing CRM features.
- Implement AI features that improve customers’ daily tasks.
- Improve the performance and scalability of the company’s APIs and GraphQL infrastructure.
- Improve synchronization of millions of sales emails and calendar events each month.
- Work with Twilio APIs, WebSockets, and WebRTC to improve calling features.
- Build user-facing analytics features based on sales activity data.
- Improve Elasticsearch-backed search features.
- Enhance internal messaging infrastructure using streaming technologies such as Kafka and Redis.
- Build and enhance integrations with SaaS platforms including Google G Suite, Zapier, and web conferencing providers.
- Enhance the web application with real-time updates powered by GraphQL subscriptions.
- Use large language model services from providers such as OpenAI, Groq, and AssemblyAI.
- Help manage large-scale data processing workloads involving MongoDB documents, PostgreSQL rows, logs, telemetry spans, events, containers, call recordings, and network traffic.
- Collaborate regularly with backend and frontend engineers, product managers, designers, and other teams.
Requirements
- At least five years of experience building modern backend systems for Senior 1 and Senior 2 candidates; staff-level candidates require at least eight years.
- Professional Python experience is preferred, though working Python knowledge plus experience in other languages is acceptable.
- Experience building Internet-facing web APIs or systems supporting high-volume loads.
- Hands-on production experience with MongoDB, PostgreSQL, Elasticsearch, or similar data stores.
- Experience designing, scaling, debugging, and optimizing systems for speed and reliability.
- Experience participating in code reviews and improving codebase structure and quality.
- Ability to communicate in spoken and written English.
- Must be located in the USA within the ET, CT, MT, or PT time zones.
- Open source contributions related to the technology stack are a bonus.
- Experience leading small project teams, building B2B SaaS products, implementing AI-enabled features, or working with complex API and asynchronous event-processing architectures is preferred.
Benefits
- 100% remote within the USA, limited to ET, CT, MT, and PT time zones.
- Five weeks of PTO upon joining plus a winter holiday break, with two additional PTO days added each year.
- Optional four-day work week at 80% pay.
- Paid parental leave for primary and secondary caregivers.
- One-month paid sabbatical after five years.
- US healthcare benefits including medical, dental, vision, HSA, and dependent care FSA options.
- US 401(k) with a 6% company match and immediate vesting.
- Annual company-wide in-person gathering, with the 2026 event planned for Barcelona, Spain.
Tech Stack
Categories
About Close
Close builds a sales CRM for founders, startups, and small businesses, combining pipeline management with built-in calling, email, SMS, automation, and AI (including its Chloe agent). It sells subscription SaaS that helps inside sales teams communicate with prospects and manage deals from one platform. Founded in 2013 and headquartered in Austin, Texas, Close is privately held, bootstrapped, and profitable.